Cane-mill



@No M dem 0 D. G'. COPPIN.

GANE MILL No. 558,638. PatentedApr. 21,1896;

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[7217 55M if ill M WM J Nirnn ATENT OFFICE.

DANIEL G. COPPIN, OF NEVPORT, KENTUCKY, ASSIGNOR TO THE BLYMYERIRON-VORKS COMPANY, OF CINCINNATI, OHIO.

CANE- SPECIFICATION forming part of Letters Patent No. 558,638, datedApril 21, 1896.

Serial No. 559,748. (No model.)

To all whom t may concern,.-

Be it known that I, DANIEL G. COPPIN, a citizen of the United States,residing at Newport, in the county of Campbell and State of Kentucky,have invented certain new and useful Improvements in Canedllills and Ido hereby declare the following to be a full, clear, and exactdescription of the invention, reference being had to the annexeddrawings, which form part of this specification.

This invention relates to those grindingmills whose side plates orhousings are slotted vertically to admit boxes within which are fittedthe journals of an upper horizontal roll having at one end a bevel-wheelthat gears with a similar wheel secured to a vertical driving-shaft; andmy improvement comprises a novel construction of bridge-piece whichcarries a step or socket for said shaft to turn in. The bridge-piece isa stout casting adapted to span the upper roll, and has four armsradiating from a central hub, and each arm has at its outer end a flangeadapted to be bolted to the side plates at a proper distance from theirvertical slots. By this means an extended base is afforded for thebridge-piece,

while at the same time unobstructed access is afforded to thejournal-bearings for oiling and other purposes, as hereinafter morefully described.

In the annexed drawings, Figure l is a vertical section of the upperportion of a grinding-mill embodying myimprovement, said section beingtaken in the plane of the journalbearings of the top roll. Fig. 2 is aside elevation of said mill, a pinion of said roll being omitted, itsposition indicated by a dotted circle, and the journal to which saidpinion is secured being sectioned. Fig. 3 is an enlarged axial sectionof the socket or step iitted within the hub of the bridge-piece. Fig. 4is a plan of said bridge and portions of the side plates or housings.Fig. 5 is an enlarged axial section of the upper part of a tubularstandard that incloses the vertical shaft of the mill.

The main frame of my mill consists, essentially, of four corner posts orcolumns A and a pair of side plates or housings B B', the upper portionsof said plates being slotted vertically at b b', as more clearly seen inFig. 4, to admit boxes or other bearings C C', within which arejournaled the gudgeons d d of an upper horizontal roll D, a pinion Ebeing secured to the gudgeon d, While a bevel-wheel F is attached to theother gudgeon cl. lPinion E drives a pair of lower rolls in the usualway; but the bevel-wheel F gears with a master-wheel G, securedhorizontally to a vertical driving-shaft II, which shaft may be turnedby any suitable means, but usually it has a sweep attached to it, inorder that the mill may be operated by horses or their animalequivalents. The upper port-ion of this shaft H traverses a tubularstandard I, the bore of which latter is slightly larger in diameter thansaid shaft, as more clearly seen in Fig. 5. Furthermore, the upperportion of standard I has a bushing J inserted within it, which bushingis made of any suitable antifriction metal, and is polygonal inhorizontal section, so as not to be moved by the turning of shaft Il.

Bushing .I is simply bored out to fit snugly around said shaft, and thenis dropped into a properly-shaped cavity in the upper end of thestandard, no dressing or other tting of these parts being necessary.

Standard I has four radial arms i secured to the pillars A of the mainframe.

K is a socket or step tted within the central boss or hub L of thebridge-piece previously referred to, the socket being also made of anantifriction metal, and having at its lower end a square or othernon-circular lug 7a, as more clearly seen in Fig. 8. This lug fits intoa similarly-shaped hole in the bottom of the hub L, and thereby preventsthe socket K being turned around by the shaft I-I.

Radiatin g from the hub L are four arms M, the outer ends of whichterminate with horizontal flanges m, capable of being bolted to the sideplates B B', as more clearly seen in Fig. 4.

Reference to Fig. l shows that the bridgepiece L M m is sufficientlylong to span the roll D, and that it is high enough to clear the latter,while Fig. 4 indicates that the bearings m of said bridge are somewhatremote from the slots h b of the side plates B B. Consequently thisstout cast bridge-piece affords a firm steady bearing for the verticaldriving-shaft H without obstructing the open upper ends of the slots bb', and on this ac- IOO count the boxes or bearings C C can be taken outat any time Without disturbing other parts of the mili. Again, thisspanning of the slots and roll by the bridge-piece affords the mostconvenient access to the roll, dac., either for cleaning or lubricatingthe same. Fig. 1 shows also that the master-Wheel G is so 1ocated as notto touch any part of the millfrarne, nor to come in contact either withthe bridge L M or standard-arms e'. Therefore the only possible Wear ofsaid Wheel is caused by the engagement of its teeth With those of thepinion F, and for this reason my mill will run true Without requiringrepeated adjustments. Finally, as the shaft II has but two bearings J Kthe friction of the mili is reduced to a minimum and the cost of manufacture is materially lessened.

I claim as my invention- 1. The combination, in a cane-mill, of a pairof housings having a set of rolls journaied therein, the upper one ofwhich is provided With a bevel-gear; a bridge above said upper roll, andhaving its bearings secured to said housings; a masterwheei above saidbridge and engaging With said bevel-gear, but out of contact with anypart of the shaft-supports; a tubular standard above said Wheel; andadriving-shaft journaled in said bridge l and standard,and carrying said1n aster-wheel, for the purpose described.

2. The combination, in a cane-mili, of a pair of housings B, B', havingslots b, b', open i at their upper ends; a set of rolls journaied insaid housings, the upper roll of which is provided with a bevel-gear F,a bridge M above said upper roll, and secured to said housings at fourbearings m, a master-Wheel G above said bridge and engaging With saidbevel-gear F, but out of contact with any part of the shaft-supports; atubular standard I above said Wheel; and a driving-shaft I'I j ournaiedin said bridge and standard, and carrying said master-Wheel G, for thepurpose described.

3. The combination, in a cane-mili, of a pair of housings B, B', havingslots b, h', open at their upper ends; a set of rolls journaied in saidhousings, the upper roll of Which is provided With a bevel-gear F; abridge M above said upper roll, and secured to said housings at fourbearings m; a non-rotatable step K, seated in said bridge; amaster-Wheel G above said bridge and engaging with said bevel-gear F,but out of contact with any part of the shaft-supports; a tubularstandard I above said Wheel; a non-rotatable bushing .I fitted withinsaid standard; and a drivingshaft II journaied in said step and bushingand carrying said master-Wheel G, all as herein described.

4. The combination, in a cane-mili, of a set of rolls; ya bevel-gearsecured to the upper roll; a m aster-Wheel engaging with said beveigear,but out of contact with any part of the shaftesupports; a verticalbearing above said Wheel; a bridge beIoW it; a step in the upper face ofsaid bridge; and a driving-shaft journaied in said bearing and step, andcarrying said master-Wheel, in the manner described.

In testimony whereof I affix my signature in presence of two Witnesses.

DANIEL G. COPPIN,

Vitnesses:

JAMES H. LAYMAN, RICHARD BAHMANN.

